Idaea bilinearia
In 3 days ~20% in a week ~40%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report an Idaea bilinearia sighting in Cévennes National Park on a given day, based on 38 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 401st most-seen of the 996 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report an Idaea bilinearia in Cévennes National Park on a given day, against under 5% in October to June, the lowest months. That is one of Cévennes National Park's driest months, with about 35 mm of rain against 260 mm in October.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Idaea bilinearia sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Only Cévennes National Park, in our data
Cévennes National Park is the only park on Wallace's Line with enough records to rate Idaea bilinearia sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Idaea
The closest relatives of the Idaea bilinearia that you can see in Cévennes National Park (genus Idaea) are Portland Ribbon Wave (about 10%), Satin Wave (about 10%) and Idaea ostrinaria (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Idaea bilinearia is recorded against all the insects logged in Cévennes National Park (38 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
